Method for masking defects in a stream of audio data

US6421802B1 · kind B1 · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Wolfgang A. Schildbach · Nuremberg, DE
• Jürgen Herre · Buckenhof, DE
• Martin Sieler · Achern, DE
• Karlheinz Brandenburg · Erlangen, DE
• Heinz Gerhauser · Waischenfeld, DE

Key dates

• Filing date: Jun 23, 1999
• Grant date: Jul 16, 2002
• Expiry date: Jun 23, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B20/00992
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

In a method for concealing errors in an audio data stream the occurrence of an error is detected in the audio data stream, audio data prior to the occurrence of the fault being intact audio data. Thereafter a spectral energy of a subgroup of the intact audio data is calculated. After forming a pattern for substitute data on the basis of the spectral energy calculated for the subgroup of the intact audio data, substitute data for erroneous or missing audio data which correspond to the subgroup are created on the basis of the pattern.